The document provides an overview of computer systems, detailing components such as hardware, software, and memory. It explains the roles of input units, output units, the CPU, and the ALU in processing data, along with software types like system software and application software. Additionally, it highlights the importance of memory in data storage and management.

1. Computer System Overview
Grade XI – Computer science
Teacher – Sumedha Deshpande

2. Introduction
Computer
System
Hardware Software
Input
Unit
Output
Unit
Storage
Unit

3. Input / Output Unit
Input Unit
• An input unit takes the input and
converts it into binary form so that it can
be understood by the computer.
Output Unit
• Output unit converts the output in binary form
to human readable form.
Sr. No. Input Data Instruction
1. Add 2 and 3 2,3 Add
2. Print “Hello World” “HelloWorld” Print

4. The CPU – Central Processing unit
ALU – Arithmetic Logic Unit
• ALU performs arithmetic and logical
operations.
• Result is sent back to the memory
after processing
Registers
• Small units of data holding places used
to hold some important information
during processing

5. The CPU – Central Processing unit
CU – Control Unit
Controls and guides interpretation,
flow and manipulation of all data and
information.
Memory

6. Computer Memory

7. Computer Memory- RAM/ROM

8. The Storage Unit

9. The Storage Unit

10. The Storage Unit

11. Mobile Organization

12. Types of software
Software
System
Software
OS
Language
Processor
Application
Software
Packages Utilities
s/w
Libraries

13. Working hierarchy in computer